1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.upgrade.v5_1_5.util;
24  
25  import com.liferay.portal.kernel.dao.jdbc.DataAccess;
26  
27  import java.sql.Connection;
28  import java.sql.PreparedStatement;
29  import java.sql.ResultSet;
30  
31  /**
32   * <a href="MBDiscussionDependencyManager.java.html"><b><i>View Source</i></b>
33   * </a>
34   *
35   * @author Brian Wing Shun Chan
36   * @author Amos Fong
37   */
38  public class MBDiscussionDependencyManager extends DependencyManager {
39  
40      public void update(
41              long oldPrimaryKeyValue, Object[] oldColumnValues,
42              Object[] oldExtraColumnValues, long newPrimaryKeyValue,
43              Object[] newColumnValues, Object[] newExtraColumnValues)
44          throws Exception {
45  
46          long threadId = 0;
47  
48          for (int i = 0; i < columns.length; i++) {
49              if (columns[i][0].equals("threadId")) {
50                  threadId = (Long)newColumnValues[i];
51              }
52          }
53  
54          if ((threadId == 0) && (extraColumns != null)) {
55              for (int i = 0; i < extraColumns.length; i++) {
56                  if (extraColumns[i][0].equals("threadId")) {
57                      threadId = (Long)newExtraColumnValues[i];
58                  }
59              }
60          }
61  
62          if (isDuplicateThread(threadId)) {
63              deleteDuplicateData("MBMessage", "threadId", threadId);
64              deleteDuplicateData("MBMessageFlag", "threadId", threadId);
65              deleteDuplicateData("MBThread", "threadId", threadId);
66          }
67      }
68  
69      protected boolean isDuplicateThread(long threadId) throws Exception {
70          Connection con = null;
71          PreparedStatement ps = null;
72          ResultSet rs = null;
73  
74          try {
75              con = DataAccess.getConnection();
76  
77              ps = con.prepareStatement(
78                  "select count(*) from MBDiscussion where threadId = ?");
79  
80              ps.setLong(1, threadId);
81  
82              rs = ps.executeQuery();
83  
84              while (rs.next()) {
85                  long count = rs.getLong(1);
86  
87                  if (count > 0) {
88                      return false;
89                  }
90              }
91  
92              return true;
93          }
94          finally {
95              DataAccess.cleanUp(con, ps, rs);
96          }
97      }
98  
99  }